Stillman Jennifer A
School of Psychology, Massey University Albany, Private Bag 102-904, North Shore MSC, Auckland, New Zealand.
Percept Psychophys. 2008 Oct;70(7):1243-7. doi: 10.3758/PP/70.7.1243.
Anomaloscopes are used in clinical and research applications involving the assessment of color vision. Output data include the matching range (MR), the midpoint, and the anomaly quotient (AQ). The latter is commonly used to compare data obtained using different instruments. However, the midpoint and AQ ultimately depend on the MR, for which there is no universal operational definition. In this study, 5 volunteers with normal color vision each completed 510 trials in a rating task with an anomaloscope employing the Moreland equation. The aim was to investigate the nature of the perceptual transition into, and out of, a metameric match. This was found to be less than abrupt, providing ample opportunity for the influence of individual response biases. Consequently, an agreed-upon definition of the MR, associated with an appropriate psychophysical technique, would facilitate the identification and tracking over time of acquired color vision deficits and would improve the validity of interstudy comparisons.
色觉检查仪用于涉及色觉评估的临床和研究应用中。输出数据包括匹配范围（MR）、中点和异常商数（AQ）。后者通常用于比较使用不同仪器获得的数据。然而，中点和AQ最终取决于MR，而对于MR尚无通用的操作定义。在本研究中，5名色觉正常的志愿者每人使用采用莫兰德方程的色觉检查仪在一项评分任务中完成了510次试验。目的是研究进入和离开同色异谱匹配的知觉转变的性质。结果发现这种转变并非突然发生，这为个体反应偏差的影响提供了充足的机会。因此，与适当的心理物理学技术相关联的MR的商定定义将有助于识别和长期跟踪获得性色觉缺陷，并将提高研究间比较的有效性。
